Experience the cool, crisp luxury of fine percale sheeting made from an intimate 60/40 blend of soft cotton and durable spun polyester. Martex® 200 Thread Count Cotton Blend Pillowcase Case Pack are built to last and appeal to a broad range of properties. The Millennium sheet brings uncompromised quality and durability at an economical price. Martex® is compliant with the general services administration (GSA) for sale to the US government.